A soft metal or nonmetal sleeve, designed to mate with a pin-rivet. it may include an external wrenching facility which breaks off at a perdetermined torque to form a head.
NSN 6620-01-483-8189
NSN 6110-00-222-3317
NSN 6240-01-099-2472
NSN 6145-01-446-5421
NSN 6240-00-220-5333
NSN 2925-01-219-9471
NSN 7035-00-238-3662
NSN 6645-00-149-1100
NSN 5915-01-013-8995
NSN 6620-00-767-4377
NSN 5905-01-645-0009
NSN 6620-01-078-6372